16449538 has 32 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 6845904.

The previous prime is 16449529. The next prime is 16449541. The reversal of 16449538 is 83594461.

It is a self number, because there is not a number n which added to its sum of digits gives 16449538.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118273 + ... + 118411.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

It is a vampire number, since it can be written as 1946 ⋅ 8453 (with its own digits).

Almost surely, 2^16449538 is an apocalyptic number.

16449538 is a deficient number, since it is larger than the sum of its proper divisors (12580862).

16449538 is a wasteful number, since it uses less digits than its factorization.

16449538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its digits is 103680, while the sum is 40.

The square root of 16449538 is about 4055.8030031056. The cubic root of 16449538 is about 254.3223736532.

The spelling of 16449538 in words is "sixteen million, four hundred forty-nine thousand, five hundred thirty-eight".